package com.hwd.gmall.order.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.stream.Collectors;

/**
 * 资源授权类
 * <p>
 * // @EnableGlobalMethodSecurity 激活方法上的PreAuthorize注解
 *
 * @author 黄伟东/Victor
 * @date 2022/5/4 22:28
 */
@Configuration
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class GmallResourceServerConfig extends ResourceServerConfigurerAdapter {

    /** 公钥 */
    private static final String PUBLIC_KEY = "public.key";

    /**
     * 定义JwtTokenStore jwd令牌转换器
     *
     * @param jwtAccessTokenConverter jwd令牌转换器
     * @return org.springframework.security.oauth2.provider.token.TokenStore
     */
    @Bean
    public TokenStore tokenStore(JwtAccessTokenConverter jwtAccessTokenConverter) {
        return new JwtTokenStore(jwtAccessTokenConverter);
    }

    /**
     * 定义JJwtAccessTokenConverter
     *
     * @return org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter
     */
    @Bean
    public JwtAccessTokenConverter jwtAccessTokenConverter() {
        JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
        converter.setVerifierKey(getPubKey());
        return converter;
    }

    /**
     * 获取非对称加密公钥
     *
     * @return java.lang.String
     */
    private String getPubKey() {
        Resource resource = new ClassPathResource(PUBLIC_KEY);
        try {
            InputStreamReader inputStreamReader = new InputStreamReader(resource.getInputStream());
            BufferedReader br = new BufferedReader(inputStreamReader);
            return br.lines().collect(Collectors.joining("\n"));
        } catch (IOException ioe) {
            return null;
        }
    }

    /**
     * Http安全配置，对每个到达系统的http请求链接进行校验
     *
     * @param http HttpSecurity
     */
    @Override
    public void configure(HttpSecurity http) throws Exception {
        //所有请求必须认证通过
        http.authorizeRequests()
                // 下边的路径放行
                .antMatchers()
                .permitAll()
                .anyRequest()
                // 其他地址需要认证授权
                .authenticated();
    }
}